. >>> pope benedict xvi celebrated his last public mass tonight. [ speaking foreign language ] >> he marked the beginning of lent with a mass. he announced his retirement two days ago saying he no longer has the strength to continue his duties. he will be taken to a retreat 15 miles south east of roam. >>> dozens of men and women gathered at the bart station in support of the 11 million undocumented immigrants. they want to make sure families are not torn apart by deportation and calling for a clear path to citizenship. >> a message of the faith community standing with the immigrant community here on ash wednesday and saying enough is enough. this is our opportunity to actually make real change when it comes to citizenship. >> it included the pouring of ashes on the street. they chose the mission district because it is known for making immigrants feel at home. >>> they have agreed to merge. this is a move that will create the biggest airline. the boards voted on the merger today. siting sources close to the morninger. they have been in talks for a year. reports say the ceo of u.s. ai